990110121011099 has 12 divisors (see below), whose sum is σ = 1088328659342568. Its totient is φ = 900078772443840.

The previous prime is 990110121011093. The next prime is 990110121011113.

990110121011099 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 990110121011099 - 2¹⁶ = 990110120945563 is a prime.

It is a super-2 number, since 2×990110121011099² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990110121011093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91862489 + ... + 102073194.

It is an arithmetic number, because the mean of its divisors is an integer number (90694054945214).

Almost surely, 2^{990110121011099} is an apocalyptic number.

990110121011099 is a deficient number, since it is larger than the sum of its proper divisors (98218538331469).

990110121011099 is a wasteful number, since it uses less digits than its factorization.

990110121011099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193977898 (or 193977887 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 44.

The spelling of 990110121011099 in words is "nine hundred ninety trillion, one hundred ten billion, one hundred twenty-one million, eleven thousand, ninety-nine".